:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1f2328;
  --muted: #6b7280;
  --line: #e5e7eb;
  --primary: #4f46e5;
  --primary-text: #ffffff;
  --green: #15803d;
  --green-bg: #dcfce7;
  --blue: #1d4ed8;
  --blue-bg: #dbeafe;
  --amber: #b45309;
  --amber-bg: #fef3c7;
  --red: #b91c1c;
  --red-bg: #fee2e2;
  --gray-bg: #f3f4f6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --card: #1b1e24;
    --text: #e6e8eb;
    --muted: #9aa1ab;
    --line: #2c313a;
    --primary: #818cf8;
    --primary-text: #111317;
    --green: #4ade80;
    --green-bg: #14532d;
    --blue: #93c5fd;
    --blue-bg: #1e3a8a;
    --amber: #fcd34d;
    --amber-bg: #78350f;
    --red: #fca5a5;
    --red-bg: #7f1d1d;
    --gray-bg: #262a31;
  }
}

* { box-sizing: border-box; }
/* display:flex 등을 준 요소도 hidden 속성이면 반드시 숨긴다 */
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, "Segoe UI", "Malgun Gothic", "Apple SD Gothic Neo", sans-serif;
}
main { max-width: 1000px; margin: 0 auto; padding: 16px; }
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 16px; background: var(--card); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 5;
}
.top h1 { font-size: 18px; margin: 0; white-space: nowrap; }
.top-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin-bottom: 12px; }
.login { max-width: 360px; margin: 48px auto; }
label { display: block; margin-bottom: 12px; font-weight: 600; }
input, select, textarea {
  display: block; width: 100%; margin-top: 4px; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--text); font: inherit;
}
small { display: block; font-weight: 400; margin-top: 4px; }
button { font: inherit; border-radius: 8px; padding: 8px 12px; cursor: pointer; border: 1px solid var(--line); background: var(--card); color: var(--text); }
button.primary { background: var(--primary); color: var(--primary-text); border-color: var(--primary); font-weight: 600; }
button.ghost { background: transparent; }
button.danger { color: var(--red); }
button:disabled { opacity: .5; cursor: default; }
.muted { color: var(--muted); }
.center { text-align: center; }
.error-text { color: var(--red); min-height: 1.5em; margin: 8px 0 0; }
.notice.error { border-color: var(--red); color: var(--red); }

.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 8px; margin-bottom: 12px; }
.stat { text-align: left; padding: 12px; border-radius: 12px; }
.stat b { display: block; font-size: 22px; }
.stat.selected { outline: 2px solid var(--primary); }

.toolbar { display: flex; gap: 8px; padding: 12px; }
.toolbar input { flex: 1; margin: 0; }
.toolbar select { width: auto; margin: 0; }

.list { display: grid; gap: 10px; }
.device { padding: 14px 16px; }
.device-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.device-head .name { font-weight: 700; font-size: 16px; }
.device-head .phone { color: var(--text); }
.device-meta { margin: 6px 0 10px; font-size: 13px; }
.device-meta span + span::before { content: " · "; color: var(--muted); }
.expiry { font-weight: 600; }
.memo { margin: 0 0 10px; padding: 8px 10px; background: var(--gray-bg); border-radius: 8px; font-size: 13px; white-space: pre-wrap; }
.actions { display: flex; flex-wrap: wrap; gap: 6px; }
.actions button { padding: 6px 10px; font-size: 13px; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.b-paid { background: var(--green-bg); color: var(--green); }
.b-trial { background: var(--blue-bg); color: var(--blue); }
.b-soon, .b-pending { background: var(--amber-bg); color: var(--amber); }
.b-expired, .b-suspended { background: var(--red-bg); color: var(--red); }

.settings summary { cursor: pointer; font-weight: 700; }
.settings form { margin-top: 12px; }

dialog { border: 1px solid var(--line); border-radius: 12px; background: var(--card); color: var(--text); padding: 20px; width: min(360px, 92vw); }
dialog::backdrop { background: rgba(0, 0, 0, .4); }
dialog h3 { margin-top: 0; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; }

.tabs { display: flex; gap: 6px; margin-bottom: 12px; }
.tabs button { flex: 1; padding: 10px; font-weight: 600; }
.tabs button.active { background: var(--primary); color: var(--primary-text); border-color: var(--primary); }
.toolbar.wrap { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.toolbar.wrap > * { width: 100%; margin: 0; }

.summary { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.summary div { min-width: 90px; }
.summary b { display: block; font-size: 20px; }
.summary .net b { color: var(--green); }

table.drivers { width: 100%; border-collapse: collapse; font-size: 14px; }
table.drivers th, table.drivers td { padding: 8px 6px; border-bottom: 1px solid var(--line); text-align: right; }
table.drivers th:first-child, table.drivers td:first-child { text-align: left; }
table.drivers tbody tr { cursor: pointer; }
table.drivers tbody tr:hover { background: var(--gray-bg); }

.day { margin: 16px 0 6px; font-weight: 700; font-size: 14px; }
.ride { padding: 12px 14px; margin-bottom: 8px; }
.ride-head { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-size: 13px; }
.ride-head .fare { margin-left: auto; font-weight: 700; font-size: 15px; }
.ride-route { margin: 6px 0 4px; }
.ride-route .to { font-weight: 600; }
.ride-money { font-size: 13px; }
.b-journal { background: var(--green-bg); color: var(--green); }
.b-candidate { background: var(--gray-bg); color: var(--muted); }
.small-note { font-size: 12px; margin-top: 16px; }

@media (max-width: 560px) {
  #whoami { display: none; }
  .top-actions button { padding: 6px 10px; }
  .toolbar { flex-direction: column; }
  .toolbar select { width: 100%; }
}